Multicoin-control locking mechanism



1929- J. G. STEINKAMP MULTICOIN' CONTROL LOCKING MECHANISM Filed Aug. 29, 1927 5 Sheets-Sheet NOV. 5, 1929. J STElNKAMP 1,734,748

MULTICOIN CONTROL LOCKING MECHANISM Filed Aug. 29, 1927 5 Sheets-Sheet 2 (Joseph GJSfc/n/xamp J. G. STEINKAMP MULTICOIN CONTROL LOCKING MECHANISM Nov. 5, 1929.

Filed Aug. 29, 1927 5 Sheets-Sheet 5 gnuemhw Nov. 5, 1929. J. G. STEINKAMP 1,734,748

MULTICOIN CONTROL LOCKING MECHANISM Filed a- 1927 5 Sheets-Sheet 4 l i i-m 1 J1 Q/oseph @fefn/famp Nov- 5, 9 J. G. STEINKAMP MULTICOIN CONTROL LOCKING MECHANISM Filed g 1927 5 Sheets-Sheet 5 gwwzwtot Patented Nov. 5, 1929 PATENT OFFICE J'OSEfH G. BTEINKAMP, O1 CINCINNATI, OHIO IUL'I'ICOIN-CONTROL LOCKING HECHANISI Application filed August 29, 1927. Serial No. 218,061.

This invention relates to a locking device adapted to be set by a suitable elapsed time mechanism and conditionable for opening or unlocking with a key by the deposit of coins in proportion to elapsed periods of time. The invention further relates to a novel application of such locking device to parking stalls for automobiles, to the end that an equitable rental rate for the stalls may 1 be collected with a minimum of attendance service by a caretaker.

An obJect of the invention is to provide a locking device of the class described, wherein the operation is begun by closing the barrier member upon a compartment, stall or other closure in which a vehicle or any other thing may be safel stored.

Another 0 ject is to'provide such mechanism wherein a key, which also serves as a check, is retained against removal from the device when the mechanism is unlocked and which will release the key when the device is locked and set in operation.

Another object is to provide a device, which when locked requires the insertion of a coin to permit entry of the key at any time after locking, within the first unit period of time, and wherein additional coins must be inserted, one for each complete elapsed period of time thereafter.

Another object is to provide such mechanism with means whereby it automatically reconditions itself for reuse by the unlocking operation.

Another object is to provide a structure for the purposes stated, which is compact and strong, and yet accurate in its operation.

These and other objects are attained by the means described herein and disclosed in the accompanying drawings, in which:

Fig. 1 is a perspective View of a device of the invention operatively embodied in an automobile parking stall.

Fig. 2 is a transverse sectional view of the device.

Fig. 3 is a view taken on line 3-3 of Fig. 2.

Fig. 4 is a transverse section taken on line 4-4 of Fig. 3 showing the relation of parts in locked position.

Fig. 5 is a view showing a portion of the mechanism of Fig. 4 in altered position. Fig. 6 is a similar view showing the device in unlocked or open position with the key retained against removal.

Fig. 7 is a fragmental cross sectional view of the timing mechanism.

Fig. 8 is a view taken on line 8-8 of Fig. 7.

Fig. 9 is a fragmental perspective view of a part forming a detail of the device of the invention. I

Fig. 10 is a perspective view of one of the coin slot covers of the device.

In the present embodiment of the invention the device is shown associated with a controling and closing bar 20 for an automobile parking stall 21 having suitable side walls 22 and 23, one of which, for example wall 23, carries at its forward end the mounting plate 24, which carries the pivotally mounted bar 20 and a casing 25 housing the mechanism hereinafter described. The plate 24 is suitably recessed and cut away on its forward base to provide a bearing hub 26 which extends into a bearing bore 27 in arm 20. As shown in Fig. 4:, a ledge 28 is provided to support the arm 20 in a horizontal or locked position, while a spring pressed ball 29 or similar mechanism, enters a detent 30 to support said arm in a vertical or open position; the end 31 of ledge 28 abuts in a notch 32 of the arm and serves to preclude forcible movement of the bar beyond its vertical position.

In a recess 33 in bearing hub 26 of the mounting plate is a lock bolt 34 which is held in a retracted position against the pressure of a spring 35 by the wall of the bearing bore 27 in the arm. This wall is recessed at 36 (see Fig. 6) to receive the bolt when the arm is in horizontal position, thereby locking the arm under the control of the lock mechanism 37, which is preferably of a tumbler lock type.

The lock mechanism differs from the ordinary tumbler lock mechanism in that it is provided with a second tumbler series conditionable by a lapsed time mechanism whereby to preclude entry of a key until coins have been deposited to the number of lapsed time periods during which the bar has been closed and locked. This structure is readily under- 109 stood by inspection of Fig. 2, in which 38 indicates the usual tumblers to be displaced by the key 39 (see Fig. 3) in order to turn the lock. Diametrically opposed to the tumblers 38 are spaced pins 40 adapted to be raised, one by one, by the lapsed time mechanism to project into key slot 41 preventing entr of the key 39 until they are removed by tl ie coin control mechanism. A knife bar 42, pivotall mounted adjacent the rear end of the lock arrel 37, sets in the notch of the top of the key when the bar 20 is in open or vertical position and precludes removal of the key until the bar is turned down and bolt 34 enters recess 36 inthe arm 20. As shown in various positions in Figs. 4, 5 and 6, a pivotally mounted block 43 is connected to the knife bar 42 by a link 44 and said block is adapted to seat in a notch 45 in lock bolt 34. The lock operates a cam arm 46 whlch actuates block 43 and link 44. The link 44 18 connected to knife bar 42 by a pin 48 Wl'llCll passes through an aperture in the rear wall 47 of the casing 25 (see Fig. 3).

From the foregoing, it will be noted that the bar 20 may be lowered to close the stall 21 and that it remains locked in such position by the bolt 34 until said bolt is thrown by means of the key 39.

It will be understood that the pins 40 are adapted to be raised in the key slot and retained therein to prevent entry of the key until they are retired from the key slot by the proper means. The raising of pins 40, one by one, at predetermined intervals of time, is done by a series of discs operable one at a time and consecutively through a suitable mechanism which may take the form of an ordinary clock works or, as shown, a motor 49 and reduction gearing mechanism 50 may be utilized for obtaining a predetermined speed, for example, one revolution per hour, of a shaft 51. The shaft 51 turns at its predetermined speed as long as the bar 20 is in a closed position. This relation of parts may be attained by using a pair of contacts 52 and 53 carried by the bar 20 and ledge 28, and through them closing and breaking an electrical circuit to the motor 49.

0n the shaft 51 are spaced discs 54, each provided with a clutch collar 55 having slots 56 in which the lugs 57 on clutch members 58 may enter. The members 58 are splined to shaft 51 so that upon engagement with collars 55 the rotation of shaft 51 is parted to the discs 54. A spring 'member 59 normally holds the complementary clutch portions out of engagement so that each disc may be held stationary by a spring pressed ball 60 seating in notch 61 in the edge of the disc. A support bar 62, mounted within the casing 25,

' has a plurality of spacer arms 63 extending in spaced parallelism therefrom, one of said spacer arms being disposed between each pair by the spring 59. As will be noted in Fig. 7

the clutch member 58 is held free of the clutch collar 55 and in abutment with the face of plate 67 when the said plate is in a raised position. The upper part of plate 67 is thicker than the lower portion thereof, so that when said late is pushed downwardly, the clutch mem er 58 is moved toward the clutch collar 55 on the disc and the pins 57 will enter the slots 56 in the collar 55 and the disc will have imparted thereto the rotation of shaft 51. Thus the shaft and disc may be connected and disconnected by reciprocation of the plate 67. In order to provide for the consecutive operation of each succeeding disc and to, at the same time, rovide for simultaneously disconnecting the receding disc, there is provided on one face 0 each disc a pin 68 which travels in the path of the plate 67 which controls the clutch for the next succeeding disc, so that upon completion of one revolution of a given disc, the pin 68 thereon will actuate the plate 67, of the succeeding disc assembly, and throw in the clutch so that said succeeding disc will begin to rotate with the shaft. At the same time, a pin 69 on the opposite side of the disc pushes the preceding cam plate upwardly, thus releasing the first mentioned disc from the power of the shaft. At this time, the notch 61 in said disc is brought partially beneath the spring pressed ball 60, which imparts a slight addi- Luv tional movement of the disc during the seating action and then retains the disc stationary.

Means are provided whereby each disc, after being brought under the influence of the shaft 51, makes one rotation therewith and is then released from the influence of the shaft as described, effects immediately precedin its stoppage, the raising of a pin 40 into t e key slot. This movement is effected by providing an arcuate plate 70 concentric with the disc 54 and arranged on one side thereof for limited relative movement upon pins 71 extending into slots 72 in the arcuate member 70. The arcuate member 70 has on its periphery a projecting) cam 73 having a tapered side 74 and an a rupt shoulder 75. As the disc rotates in counter clockwise direction, the pin 40 rides over the tapered face 74 and onto the top of projection 73,

' lu-tion of the 540, are the same and have the identical oper- 7 7 and having where it remains because the disc does not I to take -u the e elongate slot a light coil spring 76, the face thereof as at the opposite end of the spring provided wit a hook or catch 78 on a pin 79 fixed in the spacer arm 63 before it. A pin 80 fixed on the disc 54 is adapted, immediately preceding the completion of one revoisc, to engage a projection 81 on the spring so that upon the final remaining movement of the isc, it will ull the hook or catch 78 free from the fixe pin 79 thereafter rotate suflicientlj; lost motion permitted by t 72. The discs 54 car secured at one end 0 and thus release the tension placed on the spring during the revolution. When the hook portions 78 and 81 are, freed from pins 79 and 80 they will unwind for non-revolution whereupon the hook portion 81 may catch for a time upon pin 79, and when the disc is rotated in a future operation, the hook 81 will slip off of pin 79 and assume the original position as shown in Fig. 8. The purpose of the spring tension device just described is to permit of the return to starting position, of any disc which may have made an incomplete revolution when the device is stopped, by disconnecting the motor circuit when the device is unlocked.

All of the discs, excepting the first disc ation. The first disc, as best shown in Fig. 2 is not mounted for rotation with the shaft 51 but instead has a gear 82 fixed thereon and meshing with a gear 83 on counter shaft 84, which in turn has at its rear end (see Figs. 3 and 4) a gear 85 secured thereto. The gear 85 meshes with a gear 86 which also is in mesh with an arcuate rack 87 carried by that portion of the arm behind the easing 25. From the foregoing it will be noted that movement of the arm 20. through a quarter turn will effect settingof the first disc 540 through gears 86, 85, 8 3 and 82 so that the projection 730 may raise the first pin in the key slot immediately upon closing and locking of the arm. All of the pins 40 must be of two separate pieces suitably retained against removal from the, lock barrel. The first of the pins 40 which is operated by the projection 730, however has suitable telescoping portions and resilient means therein in order to permit withdrawal of the key and in order to cause this first pin 40 to pro- I ject into the key slot immediately upon removal of the key. The said first disc 540 requires no tension spring such as 76 because it is always in geared connection with the arm through counter shaft 84. The function then of the first disc is to take care of periods of use less than one predetermined lapsed time period, for example, less than one hour. The disc, however, serves to actuate the first cam plate 67 ,so as to immediately throw in the clutch on the second disc, viz, the first disc of the apparatus or the first disc 54 of the series and to set said disc in motion so that it may, at the end of one lapsed time period project a second pin 40 into the key slot and then connect a third disc with the shaft after which the second disc is freed from the shaft in the manner heretofore described.

As shown in cross section in Fig. 2, a coin slot 88 is provided for each disc and has its lower or discharge end 89 adjacent the arouate member on each of said discs. The arcuate member 70 has a notch 90 therein which is positioned immediately below one side of the discharge end 89 of the coin slot, and on the opposite side of each coin slot is a coin actuating wheel 91 which may be provided with a series of notches 92 so that when a coin 93 is dropped into the coin chute it will rest in the notch 90 and in a notch 92 in the .coin actuating wheel so that when the shaft be inserted in the key slot to operate upon the normal tumblers 39 of the lock for withdrawing the bolt 34. As previously set forth, a coin slot 88 is provided for each disc of the series. The coin chutes are adapted to he closed by suitable covers which open, one at a time, as the several discs are actuated so that a person who is about to unlock the device will know that he must deposit a coin in each of the open slots before he can condition the device for receiving the key. The first of the coin slots is Without a cover so that there will be required the deposit of one coin even though the device be locked and immediately opened. As shown at the top of Fig. 2 there is provided adjacent the mouth of each coin slot a pivotally mounted safety device which precludes accidental deposit of more than one coin in any slot. This safety device has a lug 96 which normally, projects into the coin slotbut which is pushed out of the coin slot by the deposit of a coin such as 93, after which it is permitted to turn about its axis so that a second lug 97 enters the coin slot. By reason of the abutment of a shoulder 98 on the supporting rod 99, it is impossible to insert the second coin without first throwing back the device to its original position. This device has the further advantage, when used in connection with a slug detecting device, of making it necessary for the user of a slug to call upon a caretaker or attendant to enable him to unlock the device which has been tripped by the slug or improper coin but through an arc.

which has failed to cooperate with the coin actuating wheel 91 because of improper size or because of its prior removal by such slug detectors. The coin slot covers 100 are pivotally mounted on a rod 101 and move one between each air of adjacent coin chutes 88. The cover ange 102 passes over the opening or mouth of the coin chute and beneath the top wall 103 of the casing 25. Slot cover hooks 104 are pivotally mounted upon the support rod 99 and are adapted to be tripped for releasing the slot covers when the disc 54, corresponding to a given coin-chute, completes a revolution and raises one of the pins 40. This is accomplished by providing a lug 105 on the disc which'contacts the end of a link 106 having a pivotal connection at 107 with the hook 104. The links 106 may be retained in position by providing them with longitudinal slots through which extend guide rods 10.8. The end of the hook 104 enters notched perforation 109 in the flange 102 of the coin slot cover and retains it in a closed position until the link 106 is raised by the disc, thereby moving the hook 104 on its pivotal mounting, and permitting the coin slot cover 100 to fall clear of the mouth of the coin chute under the influence of gravity. The coin slot covers may be raised by a longitudinal rod 110 which finds a bearing in a suitable slot in the plate 24 and extends through a slot 111 in the arm 20. Upon raising the arm, the rod 110 will be contacted by the end wall 112 of slot 111, whereupon final opening movement of the arm will carry with it the rod 110, which in turn will push before it any coin slot covers which are open and will carry them to a closed position, to be retained there by the hooks 104.

It will be readily apparent that the device must be conditioned for re-use after the device is unlocked and opened by a prior user. It will also be apparent that the prior user will seldom be likely to unlock the device at exactly the end of a lapsed time period. If the device is unlocked at any time intermediate a lapsed time period, contact being broken to the motor circuit and the shaft being stopped, there will be a condition within the device wherein one of the discs is clutched to the shaft and at a position other than zero. In orderto enable the return of such disc to a zero position there is provided a clutch plate thrower which consists of a rod 113 extending through the length of the casing and secured to the arm 20 and movable Rigidly mounted on the rod 113 are spaced fingers 114 which pass in an are extending through the lower position of the cam plates 67 so that any cam plate which is in a lowered position when the device is stopped, will be thrown upwardly'by a corresponding finger 114 when the arm 20 is raised. The clutch for the disc is thus released by reason of the action of spring 59 and the disc is again free of connection to the shaft, whereupon it will be returned to a zero position under influence of the spring 76. I

It will be understood that the coin chutes and the coin re-setting mechanism may be adapted for coins of uniform sizes, or they may be arranged so that a portion of the series will require a coin of one denomination and the remainder of the series may be made to require coins of larger 'or smaller denominations. In this way the device is adaptable to use in various localities so that in such places where it is desirable to induce short parking periods, the device may be arranged to require coins of a larger denomination after a given number of lapsed time periods. Where it is desirable to provide moderated charge for relatively longer total periods, the device may'be arranged to require deposit of one or more large coins for the first several lapsed time periods and thereafter to require coins of smaller denominations. The total of lapsed time periods which may be registered and charged for is dependent upon the number of discs provided, it being understood that the key 39 will be of a length proportionate to the number of discs.

The operation of the device is as follows: Assuming that the device is in the condition as left by a previous user the arm20 will be in a vertical position, electrical contacts 52 and 53 will be separated and the motor 49 and shaft 51 will be at a standstill. The key 39 is locked in the key slot by knife bar 42. When the user of the device has driven his machine into the parking stall 21 he will, upon leaving, throw down the bar 20 to the position shown in Figs. 4 and 5. In doing so, the following action takes place. Rack 87 moves in a counter clockwise direction with the arm rotating gears 86, 85, 83 and 82, thereby setting the first rotating disc 540 so that the cam plate 67 throws in the clutch for the first disc 54. The motor circuit is completed and shaft 51 begins to turn slowly, for example, at the rate of one revolution per hour. The bolt 34 is permitted to enter its recess or keeper 36 in the bar 20 under the influence of spring and member 43 drops into notch in the bolt either by gravity or by means of a suitable spring such as 115, thereby raisin link 44 and releasing the key 39 from the in uence of the knife bar 42 so that the key may be removed by the operator and retained as a check. The shaft 51 then rotates the first disc 54 in a counter clockwise direction when looking at the face as in Fig. 2. If, at this time, the operator should desire to again raise the bar so that he may remove his automobile it would be necessary that he drop a coin of proper denomination in the first coin slot which, as previously stated, is always open and therefore requires no coin slot cover. This arrangement takes care of any periods less than one lapsed time period. Assuming, however, that the device. is not opened, the first disc 54 will rotate, and at the end of one revolution will actuate the next cam actuating plate 67 by means of the pin 69 on the disc. While the cam actuating plate, controlling said disc, will release said disc from the shaft 51. Just preceding this operation the lug 105 will trip the link 106 to release the coin slot cover 100 for the first covered disc. The lug 73 on arcuate plate 7 0, during this time, has raised a second pin 40 in the key slot and the disc itself brought to rest by spring pressed ball 60 entering detent 61 in the edge of the disc. The next disc will then pass through the same cycle of operations, and at the end thereof will have its clutch thrown out, when the cam actuating plate 67 is raised by the pin 69' thereon, and at the end of its revolution will raise an additional pin 40 in the key slot and release an additional coin slot cover. The

coin slot covers drop by gravity to clear the mouths of the coin chutes when released from the hooks 104. As each of the discs rotates sufiiciently to bring the top flat portion of projection 7 3 beneath a pin 40, it has placed considerable tension upon the spring 76, and the pin 80 on the disc begins to press against the fork or tongue 81 on the spring. The

final movement of the disc then causes the pinto free the spring from pin 79. and allow it to unwind and again catch on pin 79. Thus the springs 76 are merely tensioned and then tripped and released when the disc makes a complete revolution and starts the next succeeding disc to operate. Normally, then, these springs perform no essential function for the discs. Assuming now that the user of the device returns to open the stall when the last of the discs has made but a part of a revolution; he will then examine the row of coin slots 116 and drop a coin of the proper denomination in each of them.

- As the coins are pressed into the coin chutes they will strike the projections 96 and remove them from the chute, which action will also move the indicators 97 into the slots to preclude accidental or inadvertent deposit of a second coin in one slot. The coins will drop through the chute and rest upon the arcuate notches 90 in arcuate plate and upon the edge of coin wheel 91. When a coin has been deposited in each of the open slots, the

knob 95 is turned, whereupon the coins will seat in the detents 92 in the coin wheel 91, after which, movement of the coin wheels will push the arcuate member 70 sufiiciently to remove the projections 73 from beneath pins 40 and allow said pins to drop to the normal periphery of the arcuate members. By this movement, all of the pins will be removed from the key slot so that the user may insert the key, turn it and withdraw the sponding pin 40 will not be removed and he will be unable to insert the key. Upon raising the arm 20 the rod 113, with fingers 114 thereon, is carried through an arcuate path and raises-any one of the plates 67 which may be down. This releases any of the closed clutches. At the same time, the rod 110 is moved through an 'arcuate'path and closes any of the coin slot covers100, which may be open. When the coin slot covers are brought to a fully closed position the trip latch 104 enters the perforation 109 and retains the coin slot covers in a closed position. The opening movement also breaks contact between contact members. 52 and 53 and stops the motor. Upon turning of the key the member 43 is first pushed out of its notch 45 by the cam arm 46, after which the cam surface 117 contacts the side of the perforation in the bolt 34 to withdraw it. As the member 43 is raised, link 44 and knife bar 42 are turned so that the lmife bar enters the slot in the key and locks the key in the key hole. The device is then ready for reuse. A suitable coin receptacle or tray 118, which may take the form of a drawer, is controlled by a separate lock and may be removed for collecting the coins deposited therein. It will be noted, as best shown in Fig. 2, that the coins drop directly into the coin receptacle 118 after they have performed their work.

What is claimed is 1. In a device -of the class described the combination of a lock having a key slot therein, a key adapted to enter the key slot for .turning the look, a series of pins adapted to be projected into the key slot to preclude entry of the key, means for projecting the pins into the key slot successively at predetermined intervals and means operable in con junction with inserted coins for retiring the pins from the key slot.

2. In combination, a lock barrel having a key slot therein, a key for opening the lock, means adapted to project into the key slot for precluding entry of the key, actuating means for entering the projecting means into the key slot and means rendered manually operative through the agency of an inserted coin for removing the projected means from the key slot.

3. In combination a lock structure having a key slot, a key for operating the lock, a plurality of independently movable pins adapted to be projected in the key slot to preclude entry of the key in the key slot, a series of cams for projecting the pins into the key trolling each chute, means for releasing the coin slot covers upon actuation of the pins a entry of the key into the key slot.

5. In a device of the class described, a series.

of cams, a lock having a key slot, pins actuated by said cams to enter the .key slot, means for actuating the cams at spaced intervals of time, coin chutes for each cam,

covers for the coin chutes, means for remov ing the covers from the. chutes as the cams actuate the pins and means requiring the deposit of a coin in each chute and adapted to be actuated to move the cams for retiring the pins from the key slot.

6. In a device of the class described the combination of a pivotally mounted bar, a lock mechanism comprising a slidable bolt disposed in the pivotal mounting of the bar, the bar being recessed to receive the bolt whereby the bar is locked in one position, the lock having a key slot for recelving a key whereby the bolt may be moved to unlock the bar, means whereby the key slot is blocked against the insertion of a key, and means to remove the blocking means from the slot upon co-operation with mserted coins.

7 A 'multi-coin operated locking device comprising the combination of a lock structure having a key slot, .a plurality of pins movable into the slot to preclude entry of a key, a plurality ofcams to move the pins into the key slot, means operable successively at predeterm ned intervals to actuate said cams, a plurality of coin chutes terminating adjacent the cams, covers for the chutes, means for opening said covers upon movement of the cam, and means co-operating with coins in the chute to move the cams for retiring the pins from the slot.

8. In a coin controlled parking stall for vehicles and the like the combination with a stall structure, of a pivotally mounted bar for closing the stall against exit of a vehicle, a lock provided with a key for controlling the bar, pins movable into the key slot, an elapsed time mechanism adapted to be set in motion upon closing of the bar means for successively projecting pins into the key slot of the lock, coin chutes, covers for said chutes, means to successively open the covers asthe pins enter the key slot, means rendered manually operable by the deposit of a coin in each open chute for retiring the pins from the key slot to permit entry of the key from looking the bar, and means to re-set and to de-energize the device u on raising of the bar. 7

9. In a evice of the class described the combination of a lock structure having a key slot, a plurality of pins adapted to be moved into the slot, a shaft adapted to be rotated at a pre-determined rate of speed, discs on the shaft corresponding to said pins, clutches for engaging the discs for rotation with the shaft, cams controlling the clutches and actuated by the discs whereby each disc revolves with the shaft for one revolution and then stops after conditioning the next succeeding disc for movement with the shafts, the discs havin cams which serve to move the pins into t e key slot, coin-controlled means for releasing the pins from the influence of the cams and trip tension means on the discs whereby a disc may be turned to original position if stopped before making a complete revolution.

10. In a controlled key operated lock the combination of a lock member, a rotatable barrel having a ke slot therein carried by said member, tum lers extending through the member and barrel and into the key slot at one side thereof, a key adapted to enter the slot and to position the tumblers to permit relative movement of the lock parts, a series of pins normally positioned to permit of such movement and being adapted to be projected into the key slot on the side opposite the tumblers and coin-controlled means controlling the movement of the pins into and out of the key slot whereby to control access to the key slot.

11. In a device of the class described the combination of a ratchet mounting plate having a bearing extension thereon, an arm pivotally mounted on said extension, said arm and extension being suitably recessed to receive a lock bolt whereby, in one position of the arm, the parts are locked against relative movement, a casing on the plate covering the-pivotal mounting of the arm, a lock extending through said casing and controlling the bolt, said lock having a key slot therein, a rotatable shaft extending into the casing, discs supported on said shaft, means normally retaining the discs against rotation with the shafts, one of said discs having a gear fixed thereto, a counter-shaft, means operative through the counter-shaft for moving said gear disc when the arm is moved about its pivotal mounting, means associated with each of the discs, whereby said discs other than the gear disc may be connected to and disconnected from the shaft, said means being actuated by the discs whereby to provide rotation of each disc in sequence, pins carried by the lock and adapted to be projected into the key slot, one by each disc upon rotation upon such discs, and means operative upon each disc in conjunction with a deposited coin for withdrawin the pins to permit insertion of a key where%y the arm may be released from the lock bolt.

12. In a locking device the combination of a lock having a removable key, means for projecting into the lock for precluding entry of the key therein, means to move the project ing means into the slot, a coin chute, a cover for the coin chute, means for opening the cover when the said means are projected into the lock, means operative in conjunction with a coin inserted in a coin chute for removing said projecting means from the lock and means operative when the lock is open for closing the coin chute cover.

13. In combination with a lock controlled closure means, of a multi-coin operated lock the combination of a shaft adapted to be rotated at a pre-determined rate of speed, discs carried by said shaft, clutches for individually connecting the discs to the shaft for rotation therewith, cam plates reciprocable transversely of the shaft for controlling engagement of the clutches with the discs, means carried by the discs and operable upon rotation thereof for actuating the cam plates, said means being arranged to provide for a single rotation of each disc upon completion of movement of a preceding disc and means whereby disengagement of any of the clutches may be eflected rior to the completion of a. revolution of a 14. In a device of the class described the combination of a lock having a key slot, pins ada ted to be projected into and retained in the ey slot, a shaft, a plurality of discs on the shaft, clutches operable to connect the discs for rotation with the shaft, a coin chute for each disc, a pivotally mounted cover for each chute, trip latches normally retainin the covers in. closed position, means amociated with the latches and discs for tripping the latches upon completion of a sin 1e revolution of the discs thereby conditioning the device for receiving coins in proportion to the number of discs actuated, each disc upon rotation beingadapted to roject a pin into the key slot and means a djacent each disc and adapted to co-operate with a coin de posited 1n the chute to remove the several ins from the slot'thereby permitting opening of the lock with a key u'pon deposit of a pm-determined number of coins.

In testimony whereof, I have hereunto subscribed my name this 17th day of August,

' JOSEPH G. STEINKAMR' 

